Storm Watch Updates

Stormwatch graphicLast updated February 18, 2024

With the ground already saturated from previous storms, the community is encouraged to sign-up for emergency alerts, pick up sandbags, and prepare for the storms in advance. The City will continue to monitor forecasts and conditions, and staff are ready to respond should conditions change.

Heavy Rainfall forecasted the week of February 18, 2024

The National Weather Service issued a flood watch for the entire Bay Area and Central Coast. The current weather system has brought moderate to major impacts persisting into Wednesday. Flooding and rain are the primary concern, with strong gusty winds and hazardous beach and marine conditions. There’s an increased risk of flooding due to excessive rainfall with impacts to creeks, streams, roadways in urban areas and shallow landslides (e.g. rocks or debris on the roadways.)

What you can do

Monitoring Storm Drains: 

Storm drains have limited capacity and flooding may occur in low lying areas. Since Public Works crews may be delayed in responding to reports of flooding, based on the severity of the storm, residents can help by:

  • Checking drainage systems including gutters and removing debris as necessary.
  • Using sandbags and plastic sheeting to protect flood-prone entrances to homes.
  • Ensure that garden waste is not blocking storm drains.


Union City residents and businesses may pick up a maximum of 5 sandbags (per household/business) if needed, while supplies last.  Bags can be found at the Public Works Corporation Yard located at 37650 7th Street. Sandbags can be picked up at anytime.

Safe Driving

Driving slowly and carefully, particularly where water has accumulated on roadways.  Never drive into a large body of standing water.

Stay Informed

  • To receive detailed, up-to-date information directly from the Union City Police Department via email sign up for Nixle alerts at and register for Union City Police Department (CA). Once logged in, go to setting and select the Alert, Advisory and Community option. To receive text message alerts only, text your zip code to 888777.
  • To receive Union City specific emergency alerts on your phone, sign up for AC Alert and  stay tuned to local radio, television news sources for the latest weather information and through the City’s website, social media accounts.
  • Track the forecast: For the latest forecast from the National Weather Service visit

Important Phone Numbers

Union City Public Works (510) 675-5308

After office hours, call non-emergency line (510) 471-1365, option #3
For fallen trees, debring  (on side of road) of blocked storm drains.

PG&EView or report power outages online
Call 1(877) 660-6789

If you see downed power lines, leave the area immediately and call 9-1-1, then, call PG&E at 1(800) 743-5002.

For more information about outages and safety precautions, visit


For light signal outages on 238 (Mission Blvd) or issues occurring on 880 freeway,

Report Issues online here
Alameda County Water District(510) 668-6500

To report water main breaks

Alameda County Flood Control & Water Conservation District (510)670-5480To report issues at Alameda Creek
Union Sanitary District(510) 477-7500To report sanitary sewer emergencies

For additional resources on disaster readiness, visit  page, Disaster & Emergency Preparedness.